ⓘ Cheating in video games
Cheating in video games involves a video game player using various methods to create an advantage beyond normal gameplay, in order to make the game easier. Cheats may be activated from within the game itself, or created by third-party software or hardware. They can also be realized by exploiting software bugs; this may or may not be considered cheating based on whether the bug is considered common knowledge.
Cheating in video games has existed for almost their entire history. The first cheat codes were put in place for play testing purposes. Playtesters had to rigorously test the mechanics of a game and introduced cheat codes to make this process easier. An early cheat code can be found in Manic Miner, where typing "6031769" based on Matthew Smiths driving license enables the cheat mode. Within months of Wizardry: Proving Grounds of the Mad Overlord s 1981 release, at least two commercial trainers appeared. 1983 advertisements for "The Great Escape Utility" for Castle Wolfenstein 1981 promised that the $15 product "remodels every feature of the game. Stop startup delays, crashes and chest waiting. Get any item, in any quantity. Start in any room, at any rank. Handicap your aim. Even add items".
In a computer game, all numerical values are stored "as is" in memory. Gamers could reprogram a small part of the game before launching it. In the context of games for many 8-bit computers, it was a usual practice to load games into memory and, before launching them, modify specific memory addresses in order to cheat, getting an unlimited number of lives, currency, immunity, invisibility, etc. Such modifications were performed through POKE statements. The Commodore 64, Amstrad CPC range and ZX Spectrum also allowed players with the proper cartridges or Multiface add-on to freeze the running program, enter POKEs, and resume. Some games tried to detect the Multiface and refused to load if it was present. The earliest models had no ability to "hide". Later revisions either included a switch, hid if been opened and closed the menu before loading the game, or automatically hid.
For instance, with POKE 47196.201 in Knight Lore for the ZX Spectrum, immunity is achieved. Magazines such as Crash regularly featured lists of such POKE instructions for games. In order to find them a hacker had to interpret the machine code and locate the critical point where the number of lives is decreased, impacts detected, etc. Sometimes the term POKE was used with this specific meaning.
Cheating was exploited by technology-oriented players due to the difficulty of early cheats. However, a cheat industry emerged as gaming systems evolved, through the packaging and selling of cheating as a product. Cheat-enablers such as cheat books, game guides, cheat cartridges helped form a cheat industry and cemented cheating as part of gaming culture. However, cheating was not universally accepted in early gaming; gaming magazine Amiga Power condemned cheaters, taking the stance that cheating was not part of their philosophy of fairness. They also applied this in reverse; games should also not be allowed to cheat the player. Guides, walkthroughs, and tutorials are sometimes used to complete games but whether this is cheating is debated.
Later, cheating grew more popular with magazines, websites, and even a television show, Cheat!, dedicated to listing cheats and walkthroughs for consoles and computer systems. POKE cheats were replaced by trainers and cheat codes. Generally, the majority of cheat codes on modern day systems are implemented not by gamers, but by game developers. Some say that as many people do not have the time to complete a video game on their own, cheats are needed to make a game more accessible and appealing to a casual gamer. In many cases, developers created cheats to facilitate testing, then left them in the game as they expanded the number of ways people could play it. With the rise in popularity of gaming, cheating using external software and hardware raised a number of copyright legal issues related to modifying game code.
Many modern games have removed cheat codes entirely, except when used to unlock certain secret bonuses. The usage of real-time achievement tracking made it unfair for any one player to cheat. In online multiplayer games, cheating is frowned upon and disallowed, often leading to a ban. However, certain games may unlock single-player cheats if the player fulfills a certain condition. Yet other games, such as those using the Source engine, allow developer consoles to be used to activate a wide variety of cheats in single-player or by server administrators.
Many games which use in-game purchases consider cheating to be not only wrong but also illegal, seeing as cheats in such games would allow players to access content like power-ups and extra coins that would otherwise require payment to obtain. However, cheating in such games is nonetheless a legal grey area because there are no laws against modifying software which is already owned, as detailed in the Digital Millennium Copyright Act.
2. Cheat codes
The most basic type of cheat code is one created by the game designers and hidden within the video game itself, that will cause any type of uncommon effect that is not part of the usual game mechanics.
Cheat codes are usually activated by typing secret passwords or pressing controller buttons in a certain sequence. Less common activation methods include entering certain high score names, holding keys or buttons while dying, picking up items in a particular order and otherwise performing unintuitive actions. Some games may also offer a debug console that can be used to edit game parameters. Effects might include unlocking a character or improving a characters performance: for example providing a car with greater acceleration, entering god mode or noclip mode, unlimited money or ammunition, or just visual gags with no practical purpose, such as "Tutu Qwark" in Ratchet & Clank: Up Your Arsenal.
Unlike other cheating methods, cheat codes are implemented by the game developers themselves, often as a tool to playtest certain aspects of the game without difficulty. One of the earliest known examples of this type of cheat is the Konami Code, created in 1986 by Konami developer Kazuhisa Hashimoto as he worked on porting the 1985 arcade game Gradius for use on the Nintendo Entertainment System. Hashimoto is quoted as saying "The arcade version of Gradius is really difficult, right? I never played it that much, and there was no way I could finish the game, so I inserted the so-called Konami code."
A bot is a type of artificial intelligence AI–based expert system software that plays a video game in the place of a human, to perform actions repetitive or not that enable advantages to be achieved.
4. Modification of runtime game data
Cheating can easily be achieved by modifying the games data while it is running. These methods of cheating are often less reliable than cheat codes included in a game by its creators. This is due to the fact that certain programming styles or quirks of internal game logic, different release versions of a game, or even using the same game at different times or on different hardware, may result in different memory usage and hence the trainer program might have no effect, or stop the game from running altogether. Modifying game data usually constitutes a violation of a software license agreement that prohibits modifying the program at all.
4.1. Modification of runtime game data Memory editing
Cheating via memory editing involves modifying the memory values where the game keeps its status information. The way to achieve this will vary depending on the environment in which the game is running.
4.2. Modification of runtime game data Memory editing hardware
A cheat cartridge is attached to an interface port on a home computer or console. It allows a user to modify the game code either before or during its execution. An early example is the Multiface for the ZX Spectrum, and almost every format since has had a cheat cartridge created for it; such as Datels range of Action Replay devices. Another popular example of this is Game Genie for Genesis, NES, Super NES, Game Boy, and Game Gear game consoles. Modern disc-based cheat hardware includes GameShark and Code Breaker which modify the game code from a large database of cheats. In later generation consoles, cheat cartridges have come to be replaced by cheat discs, containing a simple loader program which loads a game disc and modifies the main executable before starting it.
The legality of this type of devices has been questioned, such as in the case of Lewis Galoob Toys, Inc. v. Nintendo of America, Inc., in which Nintendo unsuccessfully sued Lewis Galoob Toys stating that its cheating device, the Game Genie, created derivative works of games and thus violated copyright law.
4.3. Modification of runtime game data Memory editing software
The most basic way of achieving this is by means of memory editor software, which allows the player to directly edit the numeric values in a certain memory address. This kind of software usually includes a feature that allows the player to perform memory searches to aid the user to locate the memory areas where known values such as the number of lives, score or health level are located. Provided a memory address, a memory editor may also be able to "freeze" it, preventing the game from altering the information stored at that memory address.
Game trainers are a special type of memory editor, in which the program comes with predefined functions to modify the run time memory of a specific computer game. When distributed, trainers often have a single + and a number appended to their title, representing the number of modifications the trainer has available.
In the 1980s and 1990s, trainers were generally integrated straight into the actual game by cracking groups. When the game was first started, the trainer would typically show a splash screen of its own, sometimes allowing modifications of options related to the trainer, and then proceed to the actual game. In the cracker group release lists and intros, trained games were marked with one or more plus signs after them, one for each option in the trainer, for example: "the Mega Krew presents: Ms. Astro Chicken++ ".
Many emulators have built-in functionality that allows players to modify data as the game is running, sometimes even emulating cheating hardware such as Game Genie. Some emulators take this method a step further and allow the player to export and import data edits. Edit templates of many games for a console are collected and redistributed as cheat packs.
Emulators also frequently offer the additional advantage of being able to save the state of the entire emulated machine at any point, effectively allowing saving at any point in a game even when save functionality is not provided by the game itself. Cheating hardware such as "Instant Replay" also allows such behavior for some consoles.
4.4. Modification of runtime game data Code injection
Somewhat more unusual than memory editing, code injection consists of the modification of the games executable code while it is running, for example with the use of POKE commands. In the case of Jet Set Willy on the ZX Spectrum computer, a popular cheat involved replacing a Z80 instruction DEC HL in the program which was responsible for decrementing the number of lives by one with a NOP, effectively granting the player infinite lives. On Microsoft Windows, a common type of video game hacking is through the use of DLLs. Users use a third party program to inject the DLL into their game of choice.
4.5. Modification of runtime game data Saved game editors
Editing a saved game offers an indirect way to modify game data. By modifying a file in persistent storage, it is possible to effectively modify the runtime game data that will be restored when the game attempts to load the save game.
Hex editors were the most basic means of editing saved game files e.g. to give the player a large sum of money in strategy games such as Dune II. However, as happened with game editors, dedicated game-editing utilities soon became available, including functions to effortlessly edit saved data for specific games, rendering hex editing largely obsolete for this purpose.
If a saved game is stored in multiple files, it may also be possible to cheat simply by mixing and matching these files. For example, if one file represents the items in a treasure chest, while another represents the players inventory, then the player can save the game before and after picking up an item from the chest, and continue play using the treasure chest file before the item was picked up, and the inventory file from afterward.
4.6. Modification of runtime game data Network traffic forgery
A similar method for cheating in online games involves editing packets to modify outbound network traffic, thus affecting the state of the game. Although this was more common in the past, modern games are developed with robustness against network and packet modifications, and the terms of service for most games explicitly forbid this form of cheating.
5. Unusual effects
Cheat codes may sometimes produce unusual or interesting effects which dont necessarily make the game easier to play. For example, one cheat in Jurassic Park: Operation Genesis makes dinosaurs appear "undead". Another example occurs in the game Dungeon Siege, where activating the cheat to extend the range of a bow also allows the enemies to fire at the same distance, thereby eliminating the advantage the cheat would have given. A cheat may even make the game harder to play; for instance, one could give the enemy special abilities, increase general difficulty, make neutral bystanders attack the player or grant the player a disadvantage such as low health points. Cheats in Grand Theft Auto games can make NPCs start rioting or wield weapons. In Grand Theft Auto III, the player can activate a cheat to enable blowing off the limbs of NPCs, a feature originally included in the game. Recently, however, Rockstar Games has not included such violent or unusual cheat codes in its games, instead choosing to focus on cheats such as vehicle spawns, player effects for example, invincibility and weapon spawns.
Some games humorously penalize the player for using another games cheat codes. For example, using cheat codes from Doom in Descent only displays sarcastic messages from the programmers on screen; using codes from Descent in its sequel Descent II lowers the players shields and energy to 1%. Codes from Doom used in Heretic give the opposite of the desired effect, such as instant death instead of invulnerability or stripping weapons instead of providing them. The original Doom s "god mode" code "IDDQD" is non-functional in Doom 3, but produces a console message: "Your memory serves you well."
Other codes make purely cosmetic changes - for example, to what the player character is wearing - but do not enhance the progress of the game. Most of the Grand Theft Auto games have a code to change the player character into an NPC. Other peculiar cheats may invoke "big-head mode" GoldenEye 007, replace weapons with other objects, or change the colors of characters.
Easter eggs are a related feature. Although such hidden content has no impact on gameplay, these eggs can be found in many games and may hint at future games in a series or give more information on a topic. Some easter eggs can only be found by cheating commands such as noclip mode.
6. Counter-cheating measures
In games having attainable achievements or high score records, or both, cheats by nature allow the player to attain achievements too easily or score point totals not attainable or extremely difficult to attain through legitimate means by a non-cheating player. In some games, developer commentary mode can have the same effect because of these games, in an effort to make all commented-on scenarios accessible to the player, render a player invulnerable to damage while in commentary mode.
6.1. Counter-cheating measures Barriers to game completion
- The Assassins Creed franchise in particular, Assassins Creed: Revelations permits the use of cheats after the game is completed, but disables player progress for any unfinished sub-quests while cheats are active.
- Some PC games and most Xbox games do not record player achievements if they are attained while cheat mode is activated. For example, Half-Life 2: Episode 2 turns this barrier into a continuing obstacle if a player saves the game with cheats activated: The game will record that fact in the save file and automatically cause subsequent reloads from the relevant save file to reactivate cheat mode.
- In Batman: The Movie on the Amiga, if the player has used a cheat, the end sequence appears upside down.
- In Ricochet Infinity, if a player cheats at all, their score will be set to zero, the message "You are Cheating" appears in the message box, and the players progress after cheating will not be recorded.
- The 32X version of Doom does not allow the player to finish the game if any cheat codes were used; instead, after a cheating player defeats the games penultimate level, the game simulates a program exit to DOS and displays a mock command prompt "C:\> ".
- In Men in Black – The Series: Crashdown, using cheats hidden in some game levels disables the save game function and the level progression. The message "Level completed with cheat codes" will appear instead, and the game will be taken to the main menu.
- In Grand Theft Auto, Grand Theft Auto 2 and Grand Theft Auto III, activating "No police" codes will interfere with the game missions requiring interaction with the police. In GTA, as there is no way of dropping a mission or saving the game, the game will stall when the player is asked to get a police car. The same is true in GTA 2 ; although the player can save the game, this can not be done while on a mission. Thus, reverting to an old save is necessary to progress in the game. GTA requires a level re-entry, losing all progress in that level. Additionally, using cheats in GTA will prevent the player from achieving 100% completion and are met with a warning message before attempting to save the game.
- In certain games for the Nintendo DS and Nintendo 3DS such as Pokemon Black and White or Tomodachi Life, countermeasures are employed to stop players taking advantage of changing the system clock, known as Time travelling. In Tomodachi Life, for example, the shops will not update or display any seasonal exclusive items until the system clock ticks over to the following day.
6.2. Counter-cheating measures Penalties to player performance
- In SRB2, a Sonic the Hedgehog fangame, finishing the game after using cheats causes the game to behave as if the player had lost, and disables the use of unlockable items.
- In the Commodore 64 version of SimCity, pressing the F1 key would add $10.000 to the players available funds. After the fourth time, an earthquake and fires would occur, and would reoccur every fourth time the cheat was used. However, if the player activated the cheat before beginning to build their city, only forest fires would have to be extinguished, rather than bulldozing and rebuilding damaged areas of the city.
- If a player in Unreal uses an "Admin Set" command, they will need to restart Unreal to enter any online server.
- In most modern games like Saints Row: The Third, using cheats either disables autosaving or saving in general, or disables Trophies or Achievements.
- Entry of Wolfenstein 3D s "ILM" code provides a player with the maximum possible lives, weapons, and ammunition but in the process resets a players score to zero.
6.3. Counter-cheating measures Disclaimers regarding player achievement
- In Grand Theft Auto: Vice City, entering a cheat code to spawn vehicles will reduce the players criminal rating. If this drops below zero, cheat-related messages are displayed. Other cheats may render the game extremely difficult. The game will notify the player if an attempt to save with gameplay-altering cheats enabled, as certain cheats will remain saved with the game if the player does save.
- If a player of Portal has any cheats activated when a chamber is completed in Challenge mode, the game will display "CHEATED!" above the performance summary screen for that level.
- MechWarrior 3 makes its cheat modes readily available as standard game options but labels these game options "dishonorable", a reference to the code of honor shared by the games rival clans.
- Metal Fatigue displays the message "player name is cheating like a slimy rat!" when using cheat codes in both single player and multiplayer mode.
- Tyrian displays the message "Cheaters always prosper" on the bottom of the score screen.
- If a player cheats using a cheating device in the game Persona 3, the games characters condemn the player for cheating.
- Sanctum displays a message after each wave if any cheating measure is used, and disables scores and achievement until the game is restarted.
- In Grand Theft Auto: The Ballad of Gay Tony, entering a cheat code while playing a mission will prevent the player from viewing their statistics and uploading them to the Rockstar Games Social Club.
7. Cheating in online games
Cheating exists in many multiplayer video games. While there have always been cheat codes and other ways to make single-player games easier, developers often attempt to prevent it in multiplayer games. With the release of the first popular internet multiplayer games, cheating took on new dimensions. Previously it was rather easy to see if the other players cheated, as most games were played on local networks or consoles. The Internet changed that by increasing the popularity of multiplayer games, giving the players relative anonymity, and giving people an avenue to communicate cheats.
Examples of cheats in first-person shooter games include the aimbot, which assists the player in aiming at the target, giving the user an unfair advantage, the wallhack, which allows a player to see through solid or opaque objects or manipulate or remove textures, and ESP, with which the information of other players is displayed. There are also cheats that increase the size of the enemies hitbox which allows the player to shoot next to the enemy, which would usually result in a miss, but the game would detect as a hit.
In role-playing games, twinking, the practice of passing on valuable items not normally available at players characters level, may be considered cheating.
In online trading card games, creating multiple accounts by jailbreaking device to get more rewards can be considered as cheating because it is unfair to players who have only one account.
In online multiplayer games, players may use macro scripts, which automate player actions, to automatically find items or defeat enemies for the players advantage. The prevalence of massively multiplayer online games MMORPGs such as World of Warcraft, Anarchy Online, EverQuest, Guild Wars, and RuneScape has resulted in the trading of in-game currency for real-world currency. This can lead to virtual economies. The rise of virtual economies has led to cheating where a gamer uses macros to gain large amounts of in-game money which the player will then trade for real cash. The Terms of Service of most modern online games now specifically prohibit the transfer of accounts or sale of in-game items for real-world money. Depending on the company running the game, this may or may not be taken seriously. Many online games subtly allow trading of in-game currency for real-life cash due to resources required for the company to find and catch gold buyers, as well as the revenue lost when banning someone buying gold.
Cheating in online games is common on public game servers. Some online games, such as Battlefield 1942, include specific features to counter cheating exploits, by incorporating tools such as PunkBuster, nProtect GameGuard, or Valve Anti-Cheat. However, much like anti-virus companies, some anti-cheat tools are constantly and consistently bypassed until further updates force cheat creators to find new methods to bypass the protection.
In single-player games, there are a number of plug-ins available to developers to use to stop cheaters. An obfuscator will scramble code so it is unreadable by decompilers, rename events/properties/methods and even add fake code. An obscurer will encrypt variables in memory and mask out strings. Anti-cheat toolkits have an array of tools such as: detecting speed hacks, encrypting player prefs, detecting time cheats, detecting wall hacks and more. These can be used in most multi-player games as well.
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